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Phil Gillespie · 07-17-2021, 10:24 PM

So just had my 8BA engine manifold vapor blasted. Came up real good.
My friend who did ths pointed out the following: The vacuum port below the carb for wipers and distributor vaccum is clear through to left hand side carb barrel only. In right hand side barrel there is a hole similar to LHS but this one is "blind" and does not go through to inlet as does LHS passage.
My thinking is to drill through into RHS port as with these passages from LHS & RHS then more vaccum will be gained.
Am I right with this? First time I have had this inlet manifold off. Removed to fit a PCV valve at road draught tube location.
Appreciate advice
Phil NZ

07-17-2021, 10:24 PM	#1
Phil Gillespie Senior Member Join Date: Sep 2011 Location: Christchurch New Zealand Posts: 1,611	8ba Inlet Manifold Under carb Vacuum. So just had my 8BA engine manifold vapor blasted. Came up real good. My friend who did ths pointed out the following: The vacuum port below the carb for wipers and distributor vaccum is clear through to left hand side carb barrel only. In right hand side barrel there is a hole similar to LHS but this one is "blind" and does not go through to inlet as does LHS passage. My thinking is to drill through into RHS port as with these passages from LHS & RHS then more vaccum will be gained. Am I right with this? First time I have had this inlet manifold off. Removed to fit a PCV valve at road draught tube location. Appreciate advice Phil NZ